Ranged voltage monitor with out-of-range enunciators

Details Ranged voltage monitor with out-of-range enunciators Ranged voltage monitor with out-of-range enunciators

1982-07-06

1985-12-17

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonquantitative

324 96, 324115, 340661, G01R 1914, G08B 2100

Patent

active

045594970

ABSTRACT:
A ranged precision voltage monitor with out-of-range enunciator characterized by a power supply and reference voltage stage, a voltage sensing stage, and an enunciator stage. The power supply stage provides power for the monitor, and further provides a reference voltage and a sensing voltage. The voltage sensing stage senses and displays voltage levels within a predetermined range, and further senses and displays over-range and under-range conditions. The enunciator produces a first audible tone for under-range conditions, and a second audible tone for over-range conditions.

REFERENCES:
patent: 4004220 (1977-01-01), Kerber et al.
patent: 4006412 (1977-02-01), Campbell et al.

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